hard flickering of laptop panel...

[Marek Wojciechowski]

Hi!
I'm using xf86-video-ati drivers for Radeon 7500 on laptop Compaq Evo n800v 
and Gentoo Linux system. Recently i upgraded xorg to the version 1.3.0.0 and 
xf86-video-ati to 6.6.3 (that's what is avilable in Gentoo). Unfortunately 
after that my LCD started to flicker. This flickering is much harder when 
opengl application is used. The longer such an application is used the harder 
is the flickering. And it does not stop when the application is closed. 
Finally everything ends up with blank panel and need of the reset of the 
computer (reseting only X server does not help as well).

I observed that this flickering probably does not depend on any radeon driver 
options that can be set in xorg.conf (i tried many configurations). 
Disablig "dri" does not help as well. So i suppose this could be a bug in the 
radeon driver.

I have to mention that vesa driver works OK...

I'm writing this because maybe someone have had such a problem and knows the 
solution. I spend hours looking for something but i found nothing useful. 

Thanks in advance for responses...
-- 
Marek Wojciechowski



P.S.1: I tried also newer xf86-video-ati drivers: 6.7.197 and 6.8.0. With no 
success. I didin't install however xorg-server-1.4.

P.S.2: Below some output from diagnostic tools:
@###########################@
grep radeon /var/log/Xorg.0.log
@###########################@
(**) |   |-->Device "ati radeon"
(II) LoadModule: "radeon"
(II) Loading /usr/lib/xorg/modules/drivers//radeon_drv.so
(II) Module radeon: vendor="X.Org Foundation"
(II) Loading sub module "radeon"
(II) LoadModule: "radeon"
(II) Reloading /usr/lib/xorg/modules/drivers//radeon_drv.so
(II) RADEON(0): [drm] created "radeon" driver at busid "pci:0000:01:00.0"
(II) AIGLX: Loaded and initialized /usr/lib/dri/radeon_dri.so

@###########################@
glxinfo | grep rendering
@###########################@
direct rendering: Yes

@###########################@
dmesg | grep agp
@###########################@
Linux agpgart interface v0.102
agpgart: Detected an Intel 845G Chipset.
agpgart: AGP aperture is 256M @ 0xa0000000
agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode
agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode
agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode

@###########################@
dmesg | grep drm
@###########################@
[drm] Initialized drm 1.1.0 20060810
[drm] Initialized radeon 1.28.0 20060524 on minor 0
[drm] Setting GART location based on old memory map
[drm] writeback test succeeded in 1 usecs

@###########################@
dmesg | grep radeon
@###########################@
radeonfb: Retrieved PLL infos from BIOS
radeonfb: Reference=27.00 MHz (RefDiv=12) Memory=260.75 Mhz, System=175.75 MHz
radeonfb: PLL min 12000 max 35000
radeonfb: Monitor 1 type LCD found
radeonfb: EDID probed
radeonfb: Monitor 2 type no found
radeonfb: panel ID string: AUO                     
radeonfb: detected LVDS panel size from BIOS: 1400x1050
radeondb: BIOS provided dividers will be used
radeonfb: Dynamic Clock Power Management enabled
radeonfb (0000:01:00.0): ATI Radeon LW 
[drm] Initialized radeon 1.28.0 20060524 on minor 0